Attachment for internal combustion engines



June 12, 1945. v W 1 BUFFERT 2,377,852

l ATTACHMENT FOR INTERNAL-COMBUSTION ENGINES Filed Jan. 15, 1943 IN'VENTOR WALTER LBLIFFERV ATTORNEYS Patented June 12, 1945 ENT ,OFFICE y ATTACHMENT Fon INTERNAL- ooMBUsTIoN ENGINES WalterJ. liffet, Mi1waukee, Wis. l Application January 15, 1943, serial No. 472,456. l svclaim's; (o1. Lieg- 1:50)

4'This invention appertains to internal combustion engines and more particularly to a novel attachment therefor for facilitating the vaporizing and the distribution of the fuel charge tothe cyland'1,562,07.7, issued respectively4 to me July 15,

1924, and November'll, 1925.

Another salient object of my present invention is the provision `of baillesor lips extending into the intake pipe of the fuelsystem of an internal combustion engine between the carburetor and .i

the intake manifold, whereby to catch and retard the flow of the globules of gasoline condensing on the inner surface. of the pipe and to vaporize this gasoline in an efiicient mannerwith air streams leading toward saidlips.

A further important object of my invention is the provision of means for advantageously arranging thelips and for supplying additional air to said lips whereby to insure the proper delivery of the` fuel charge to the various cylinders of the engine. l

A still further object of my invention is the provision of a novelgasket adaptedl to be placed between the carburetor and the intake pipe having means formed directly thereon and therein for facilitating the entrance of auxiliary air into the intake manifold in denite relation to integral lips or bailles formed on the inner edge ofv said gasket.

A still further important. object of my invention is to provide a novel attachment for internal Y combustion engines, of the above character, which isof la'simple and durable character and which can be placed upon lthe market and incorporated with a conventional engineat a very small cost.

l i With these and other objects in View, the invention, consists in the .novel construction, arrangement and formation of parts, as will be hereinafter vmore specifically described, claimed, and illustrated in the accompanying drawing, in which drawing: .f Figure 1 is a fragmentary side elevational view partly broken away and in section showing my novel gasket incorporated with the fuel system of an internal combustion engine. l Figure 2 is a top plan view of the gasket.

`Figure 3 is a detail sectional view through the gaskettaken on the line 3--3 of Figure 2 looking in the direction of the arrows, a part of the in,- take pipe andthe carburetor being shown in dotted lines.

`Figure 4 is a top plan view of a slightly modifled form of my gasket which can be advantageously used with the well known `Stromberg carbureton Figure 5 is a sectional view through the gasket takensubstantially on the line 5-5 of Figure 4 looking in the direction of the arrows.

Figure 6 is a top plan view of a further modied `form of my gasket which can be advantageously used on certain well known makes of automobiles, such as the Chevrolet.

Referring to the drawing in detail, wherein similar `reference characters designate corresponding parts throughout 4the severalviews the letter G generally indicates onepreferred form of my improved gasket and as illustrated, the same can be constructed from a thin body plate I0 of sheet metal suitably shaped so that the same can be readily interposed between the intake pipe I I of an internal combustion engine anda carburetor I2. While I have stated that the gasket is made from metal, it is to be understood that `the same can be made from other materials. The carburetor I2 is of the dual down-draft type and the carburetor has associated with the upper end thereof the air cleaner I3. As the carburetor I2 is of the dual type the same includes downwardly extending parallel passage ways I4 and I5 which are adapted to communicate with similar spaced parallel passage ways I6 and I1 in the intake pipe II. This type of carburetor can be advantageously used in V type motors.

The gasket, at spaced points, is provided with openings I8 whereby the same can be effectively held `iin-,place by the stud bolts I9 utilized for connecting the carburetor to the intake pipe.

The at body I0 of the gasket has formed therein spaced openings 2U and 2| which register with the passage ways I6 and` Il in the intake pipe and the passage ways I4 and I5 in the carburetor. At the front edges of the openings 20 and 2 I, the flat body Ill is provided ,with inwardly directed crescent shaped baiiles 22. These bafes extend into the passage ways in the carburetor and the intake pipe and are provided on one side wit-h spaced radially extending slots 23 which form lips 24. The rear edges of the openings 20 and 2| have formed thereon inwardly projecting baiiles 25 and these baffles merge in with the narrow ends of the front bailies 22. Attention is called to the fact that these rbafiies also extend into the passage ways I4 and I5, I6 and I'I and thatthe ends thereof have enlarged circular lips 26. The center part of the balies 25 also have enlarged circular lips 2'I. The body plate itself, at its rear, is provided with a slot 28, which is of a relatively wide order and this slot 28 extends from the extreme outer edge of the body plate to a point between the openings 20 and 2I and the inner end of this slot communicates with the openings 20 and 2I by narrow end slots 29 which extend into the curved lips 26. Thus when the gasket is correctly disposed in place the passage way 28 forms an auxiliary air inlet for the passage ways I4, I5, I6 and I 1 and these slots 29 4by the arrows in said Figure 2.

extend into said passage ways as can be clearly seen by referring to Figure 2.

The opposite edges of` the bodyplate are provided with inwardly directed similar slots 30. These slots" are relatively narrow and extend from the side edges of the plate into the en -4 larged lips 26 and when the gasket is in place the slots form additional air inlets which com-4l Aon the front edge of the gasket opening and ex- `tendsinto said opening and in the carburetor thoroughly mixedwith such air. This will result in the saving of gasoline and the obtaining of additional powerby the insuring of a proper mixture.

By referring to Figure 2 of the drawing, it will bey noted that the air sucked into the passage ways of the intake pipe will be divided and directed toward the bailles and this is best shown The slits '23 inthe bailles 22 function as means for breaking up the drops of gasoline and for mixing the air -with the gasoline.

The baflles are also arranged as to insure the proper disposition of the mixture to the end cylinders of theengine as well as the middle cylinders of the engine and in actual practice the trailing edge of the throttle valve (not shown) is at the front of the gasket.

In Figures 4 and 5 I have shown a slightly modiiied form of my gasket and it is to be noted that the same includes a flat gasket plate 3l which is adapted to be interposed between the bottom of the carburetor 32 vand the top` oi an intake 33.' This plate is provided with a pair'oi spaced openings 34 which are adapted to register with the dual passage ways of the carburetor and the intake pipe. In this form of my invention the rear edges onlyof the openings 34 are provided with substantially crescent shaped bailles 35 and'these bailles extend into the carburetor and intake pipe passage ways. The outer edges of the bailles 35 are provided with upturned lips v3G which gradually decrease in height from "their centers toward theirouter ends. The center part ofthe lips 36 can be slightly placed inwardlyv as at 3T, if so desired. The ends of the baffles have communicating therewith slots 38 and 39.` 'Ihe slots 38 extend from the side edges of the gasket plate while the slots 3S communicate with 4a centrally-disposed slot 40 which leads to the front edge voi? the gasket plate. When the gasket is in position as shown in Figure 5 these slots form auxiliary air inlets. Drops of gasoline caught by the ballles 35 will be directed toward the ends 'of the ballles and the air inlet slots and hence this gasoline will be thoroughly co-mingled with the entering air and be effectively vaporized. This type of gasket: can "be advantageously used on carburetors of the Stromberg type' and in this type of carburetor the trailing edge of the'thro'ttle valve will be located at the rear of the gasket. Hence any gasoline dropping from this trailing edge will be caught by said bailles.

AIn Figure 6 I have shown a further modied form of my invention and thesame includes 'a gasket plate 4I` whichjis adapted to! be used in connection. with carburetors having" Va "single passage way. At the point of juncture of the baffle 45 with the baille 43 a side baille 46 is provided."- A slot 41 is formed in the gasket plate andextends from the side edge of said plate into said baille. These slots 44 and 41 form auxiliary air inlets Whenthe gasket' is associated in the fuel charge system of. an engine between the carburetor and theintake pipe. 1

- The direction of the air flow is shown bythe arrows and it can be seen that aplurality of air streams will be set up which will be directed over the lipsI to cofmingle with gasoline interrupted by' said lips or bailles. VThe baille 45 can be slit at spaced points, as at.48 Von one side, to provide a plurality of lips t0 facilitate the mixing of air and gasoline. The relatively large baille 43 tends to prevent too much ygasoline from entering the middle cylindersof the engine and-tendsto distribute the charge equally to all of the'cylinders of the engine. The baille 45 atthe rear prevents too much gasoline-:from entering Athe. end cylinders of the enginewhen the motor vehicle is goingy up a steepV grade. The. air streams are so locatedas to effectively carryy the charge to the correct-cylinders.

Changes in details may befmade without departing from the spirit or the scope of my invention, but what Iclaim as new is:

1. A manifold gasket adapted to be positioned between the carburetor and the intake pipe of the intake system of an internal combustion engine comprising a ilat plate having an opening corresponding to the bore of the intake system, an inwardly directed crescent shaped baille formed onvone edge of said opening, an inwardly directed bafllehaving. enlarged lips formed on the other edge of the opening, 'said crescent shaped baille beingl provided with slits to define spaced lips, said plate being slotted at spaced points to denne air inlet openings, said slots extending from the outer edge of the plate to said bailles. y f f ,2; A manifoldgasket for dual carburetors of the down draft type comprising a body plate having 'a pair of spaced openings registering with the. dual passage ways ofthe carburetor,v each of' said openings having a crescentrshaped baille at one 'side anda baille having spaced enlarged curved lips on the other side, the ilrstmentioned baille being providedlwith spaced slits dening lips and means forintroducing a plurality oi' air streams into the openings over the bailles,

3. A manifold gasket for dual carburetors comprising' 'a'.y flat body plate-having 'spaced openings .ior registering with the dual passage ways of said carburetor, each of said openings being provided with arcrescent shaped baille extending into the opening for interrupting the flow of gasoline `particles` collecting on the' walls of the passage Ways .off the carburetor, said gasket having air inlet. slots extending into theterminalslofA the WALTER J. l 

